DRV592

SLOS390A – NOVEMBER 2001– REVISED MAY 2002

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4

Terminal Functions

TERMINAL

I/O

DESCRIPTION

NAME

NO.

I/O

DESCRIPTION

AGND

2

Analog ground

AVDD

1

I

Analog power supply

FAULT0

5

O

Fault flag 0, low when active open drain output (see application information)

FAULT1

4

O

Fault flag 1, low when active open drain output (see application information)

HI-Z

3

I

Places both outputs of the H-bridge into a high-impedance state (2 k

Ω to ground) when a TTL logic low is

applied to this terminal; normal operation when a TTL logic high is applied.

IN–

7

I

Negative H-bridge input

IN+

6

I

Positive H-bridge input

OUT–

13–17

O

Negative H-bridge output (5 terminals)

OUT+

24–28

O

Positive H-bridge output (5 terminals)

PGND

18–23

High-current ground (6 terminals)

PVDD

9–12,

29–32

I

High-current power supply (8 terminals)

SHUTDOWN

8

I

Places the amplifier in shutdown mode when a TTL logic low is applied to this terminal; places the amplifier in

normal operation when a TTL logic high is applied

FUNCTIONAL BLOCK DIAGRAM

Gate

Drive

Gate

Drive

AVDD

OC

Detect

Start-Up

Protection

Logic

Thermal

VDDok

Biases

and

References

TTL

Input

Buffer

IN–

IN+

AGND

AVDD

PVDD

OUT+

PGND

PVDD

OUT–

PGND

FAULT0

FAULT1

SHUTDOWN

HI-Z

IN–

IN+

SDZ